mirror of https://github.com/poanetwork/quorum.git
120 lines
2.9 KiB
Go
120 lines
2.9 KiB
Go
// Copyright 2015 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package miner
|
|
|
|
import (
|
|
"sync"
|
|
|
|
"sync/atomic"
|
|
|
|
"github.com/ethereum/go-ethereum/consensus"
|
|
"github.com/ethereum/go-ethereum/log"
|
|
)
|
|
|
|
type CpuAgent struct {
|
|
mu sync.Mutex
|
|
|
|
workCh chan *Work
|
|
stop chan struct{}
|
|
quitCurrentOp chan struct{}
|
|
returnCh chan<- *Result
|
|
|
|
chain consensus.ChainReader
|
|
engine consensus.Engine
|
|
|
|
isMining int32 // isMining indicates whether the agent is currently mining
|
|
}
|
|
|
|
func NewCpuAgent(chain consensus.ChainReader, engine consensus.Engine) *CpuAgent {
|
|
miner := &CpuAgent{
|
|
chain: chain,
|
|
engine: engine,
|
|
stop: make(chan struct{}, 1),
|
|
workCh: make(chan *Work, 1),
|
|
}
|
|
return miner
|
|
}
|
|
|
|
func (self *CpuAgent) Work() chan<- *Work { return self.workCh }
|
|
func (self *CpuAgent) SetReturnCh(ch chan<- *Result) { self.returnCh = ch }
|
|
|
|
func (self *CpuAgent) Stop() {
|
|
if !atomic.CompareAndSwapInt32(&self.isMining, 1, 0) {
|
|
return // agent already stopped
|
|
}
|
|
self.stop <- struct{}{}
|
|
done:
|
|
// Empty work channel
|
|
for {
|
|
select {
|
|
case <-self.workCh:
|
|
default:
|
|
break done
|
|
}
|
|
}
|
|
}
|
|
|
|
func (self *CpuAgent) Start() {
|
|
if !atomic.CompareAndSwapInt32(&self.isMining, 0, 1) {
|
|
return // agent already started
|
|
}
|
|
go self.update()
|
|
}
|
|
|
|
func (self *CpuAgent) update() {
|
|
out:
|
|
for {
|
|
select {
|
|
case work := <-self.workCh:
|
|
self.mu.Lock()
|
|
if self.quitCurrentOp != nil {
|
|
close(self.quitCurrentOp)
|
|
}
|
|
self.quitCurrentOp = make(chan struct{})
|
|
go self.mine(work, self.quitCurrentOp)
|
|
self.mu.Unlock()
|
|
case <-self.stop:
|
|
self.mu.Lock()
|
|
if self.quitCurrentOp != nil {
|
|
close(self.quitCurrentOp)
|
|
self.quitCurrentOp = nil
|
|
}
|
|
self.mu.Unlock()
|
|
break out
|
|
}
|
|
}
|
|
}
|
|
|
|
func (self *CpuAgent) mine(work *Work, stop <-chan struct{}) {
|
|
if result, err := self.engine.Seal(self.chain, work.Block, stop); result != nil {
|
|
log.Info("Successfully sealed new block", "number", result.Number(), "hash", result.Hash())
|
|
self.returnCh <- &Result{work, result}
|
|
} else {
|
|
if err != nil {
|
|
log.Warn("Block sealing failed", "err", err)
|
|
}
|
|
self.returnCh <- nil
|
|
}
|
|
}
|
|
|
|
func (self *CpuAgent) GetHashRate() int64 {
|
|
if pow, ok := self.engine.(consensus.PoW); ok {
|
|
return int64(pow.Hashrate())
|
|
}
|
|
return 0
|
|
}
|